Dortmund Data Bank

Azeotropic Data

The experimental data shown in these pages are freely available and have been published already in the DDB Explorer Edition. The data represent a small sub list of all available data in the Dortmund Data Bank. For more data or any further information please search the DDB or contact DDBST.


No. Formula Molar Mass CAS Registry Number Name
1 CH4O 32.042 67-56-1 Methanol
2 C5H9NO 99.133 872-50-4 N-Methyl-2-pyrrolidone
Search the DDB for all data of this mixture

Data Table

Azeotropic Type T [K] P [kPa] yaz,1 [mol/mol] yaz,2 [mol/mol] Measurement Method Evaluation Source
none 313.150 n.a. n.a. n.a. Phase equilibrium Author from VLE 2
none 333.150 n.a. n.a. n.a. Phase equilibrium Author from diagram 1
none 393.190 n.a. n.a. n.a. Phase equilibrium Author 3

(yaz - vapor and liquid mole fraction)

List of Azeotrope Types

none zeotropic

List of References

1 Bittrich H.-J.; Eckert R.: Das Dampf/Flüssigkeits-Phasengleichgewicht binärer Mischungen mit Methanol oder Ethanol als einer Komponente. Z.Phys.Chem.(München) 175 (1992) 217-234
2 Zielkiewicz J.: Part 2. The N-methylpyrrolidinone + methanol mixture at T = 313.15 K: thermodynamic results and molecular dynamics caclulation. Phys.Chem.Chem.Phys. (PCCP) 5 (2003) 3193-3201
3 Horstmann S.; Fischer K.; Gmehling J.: Isothermal Vapor-Liquid Equilibrium and Excess Enthalpy Data for the Binary Systems Water + Sulfolane and Methanol + N-Methyl-2-pyrrolidone. J.Chem.Eng.Data 49 (2004) 1499-1503

Azeotropic Data Overview